Measurement of the R${}_{LT}$ response function for ${\pi }^0$ electroproduction at $Q^2$ = 0.070 (GeV/c)${}^2$ in the $N\to \Delta$ transition}

N. Sparveris, R. Alarcon, D. Barkhuff +44

Quadrupole amplitudes in the ${\gamma }^{\ast }N\to \Delta$ transition are associated with the issue of nucleon deformation. A search for these small amplitudes has been the focus of a series of mea…